MAX11661 Datasheet, PDF (17/28 Pages) Maxim Integrated Products – 500ksps, Low-Power, Serial 12-/10-/8-Bit ADCs

500ksps, Low-Power,
Serial 12-/10-/8-Bit ADCs
Typical Operating Characteristics (continued)
(MAX11665AUT+, T_A = +25°C, unless otherwise noted.)
SOT23 TYPICAL OPERATING CHARACTERISTICS
SIGNAL-TO-NOISE AND DISTORTION RATIO
(SINAD) vs. ANALOG INPUT FREQUENCY
76
100kHz SINE-WAVE INPUT
0
fIN = 99.4kHz
-20
fS = 500ksps
V_DD = 3V
74
-40
-60
AHD2 = - 88dB
72
-80
-100
70
0
50 100 150 200 250
fIN (kHz)
-120
0
50 100 150 200 250
FREQUENCY (kHz)
SUPPLY CURRENT vs. TEMPERATURE
1.6
VDD = 3.6V
1.5
VDD = 3V
SIGNAL-TO-NOISE RATIO (SNR)
vs. SUPPLY VOLTAGE (VDD)
75
74
1.4
73
VDD = 2.2V
1.3
72
1.2
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
HISTOGRAM FOR 30,000 CONVERSIONS
35,000
30,000
25,000
20,000
15,000
10,000
5000
0
2046
2047 2048 2049 2050
DIGITAL CODE OUTPUT
71
2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6
VDD (V)
THD vs. INPUT RESISTANCE
-75
fS = 500ksps
fIN = 250kHz
-80
-85
-90
-95
-100
0
20
40
60
80 100
RIN (I)
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